Radiator



Patented Feb. 20, 1934 RADIATOR Thomas Ernest McGrail, Montreal,

Quebec,

Canada, assignor to Crane Limited, Montreal,

Canada Application December 3, 1932. Serial No. 645,501

4 Claims.

The invention relates to radiators, as described in the present specification and illustrated in the accompanying drawing that forms part of the same.

The invention consists essentially in a radiator section in which the inclined fins for extending the heating surfaces, are common to a plurality of pipes connecting single heads as pointed out in the claims for novelty following a description in detail of the preferred forms of the invention.

The objects of the invention are primarily to construct radiator sections for concealed radiators or partially concealed radiators usually installed in wall recesses of apartment houses or other buildings, and now much in vogue and to insure in the assembly of these sections a maximum heating surface in the minimum of space in so far as the recess is concerned, for in the modern building every bit of space available is useful for some convenience or other, in fact the heating equipment, in place or" being the most prominent feature in a room or passage is hardly noticeable, and these radiator sections described in this invention are distinctly in line with the latest developments and besides giving the best of service are readily and economically produced, so much so that by mass production they can be sold at a very low cost price to the builder and installed at a minimum expense; to facilitate the circulation of hot water or other heating fluid and. furnish in one radiator section or unit a plurality of passages practically constituting one communication between the headers and to concentrate the contiguous heating surfaces with the walls of these passages and at the same time to direct the convection currents of air in a circulatory path that will materially aid in reconditioning the air of the chamber that is being heated; and generally to provide in concealed or partially concealed radiators an efficient heating member at a'reasonable cost of production.

In the drawing, Figure 1 is a side elevationalview of a unit of the two tube type.

Figure 2 is a side elevational view of a unit of the three tube type. V

Figure 3 is a front elevational view of either type.

Figure 4 is a vertical sectional view on the line 4-4 in Figure 3.

Figure 5 is an elevational view of the grouped sections in one form of installation broken away.

Figure 6 is a sectional View of a wall recess showing a side elevational view of the installation shown in Figure 5.

Figure 7 is a front elevational View of a group of sections in the horizontal type of installation showing the fins staggered.

Figure 8 is a vertical sectional view of a wall recess showing an end elevational View of the grouping illustrated in Figure 7.

Like numerals of reference indicate corresponcling parts in the various figures.

Referring to the drawing, the headers, indicated by the numerals 15 and 16 are shown as joined by the communicating tubes 1'7 and 18 in Figure 1 and 19, 20 and 21 in Figure 2, though there may be as many tubes as desired, the feature being that there is more than one tube for the hot water or other fluid.

These tubes constitute one connection and are singly and together with the heads, a circulatory view by a passage, which may include any number of tubes.

The radiator section shown and thus being described is preferably a casting and the fins 23 completely surround the tubes as a plurality,

one fin taking in the complete number of tubes,

and this may be lengthened to the tubes extending through inclined plates, that is to say, plates inclined to the axis of each tube, the line of intersection being approximately an angle of 45 to a tubular axis.

The fins 23 show a slot 24 on either side of each tube or pipe, and these slots tend to facilitate the distribution of heat in said fins.

At the end of one of the tubular passages a stub fin 25 projects of the same width as th; tube, and from the header area on the other side, adjacent to the end of the other passage, a stub fin 26 projects, and this stub fin 26 is also approximately the width of the tubes and extends into the fin 27 surrounding the tube.

At the otherend, the two stub fins 28 and 29 project from either side in the header area, and are approximately the width of the tubular passages. These tubular passages are preferably of oval shape in cross section, though they may be circular if desired.

In assembling these sections, the fins are preferably staggered from one section to the other respectively, either in vertical grouping or in horizontal grouping and the headers are joined by the nipples 30 and connected to feed and intermediate or return pipes, and the water or other fluid completely fills up the group of radiator sections and continues on a course in the;

general circulatory system, it does not make any difierence whether the radiators are horizontal or vertical, the operation is precisely the same. In the horizontal type of installation, the air flows upwardly through the passages formed between the fins and as these fins from one section to the other are staggered, the air flowing through is maintained at a high temperature and flows out into the room.

Usually, there are shields and registers, gratings or grilles to permit the passage of the heat and to effect ornamentation of the heating equipment.

In the vertical installation, the air flows in at the bottom and out through the upwardly inclined fins and becomes heated in exactly the same manner.

It is hardly necessary to mention that the air cannot become trapped, because it is bound to circulate in both the horizontal and the vertical types, and this continuous circulation of air through the radiator reconditions the air of the room and produces a very healthy atmosphere desides insuring very efiicient heating throughout a building.

What I claim is:-

1. In a radiator, a radiator section having a pair of headers connected by a plurality of tubes and a plurality of plate extensions forming fins obliquely crossing the tubes and slotted on either side adjacent to the tubes and directing the air in its circulatory movements around and about said tubes in its passage through assembled sections.

2. A radiator comprising several sections having single heads joined together with nipples and having a plurality of tubes to each section integral with each single head and communicating therewith at opposite sides and fins in plate form inclined and projecting on all sides from each tube.

3. A radiator comprising several sections joined by nipples and leaning rearwardly and having several tubes from single heads and fins from each set of tubes inclined to form vertical passages for the air.

4. A radiator comprising several sections joined by nipples and having tubes common to single heads and communicating intermediately and slanting fins and'stub fins bridging the tubes and forming regular passages for convection currents of air.

THOMAS ERNEST MCGRAIL. 

